Garmin GNC 420AW Installation Manual - page 133
400W Series Installation Manual
Page 6-5
190-00356-02
Rev. G
Alert Text
Possible Cause
Solution
• The external push-to-talk
(PTT) switch is stuck in the
enabled (or “pressed”) state.
• Try pressing the PTT switch
again to cycle its operation.
COM push-to-talk key stuck
(430W only)
• Wiring is incorrect.
• Check wiring
• Try pressing the switch again
to cycle its operation.
• Verify the wiring is correct.
COM remote transfer key is stuck
(430W only)
• The remote COM transfer
switch is stuck in the enabled
(or “pressed”) state.
• If the message persists,
contact Garmin technical
support.
• Try pressing the switch again
to cycle its operation.
COM transfer key stuck
(430W only)
• The COM flip-flop key is stuck
in the enabled (or “pressed”)
state.
• If the message persists,
contact Garmin technical
support.
• The unit has detected
excessive unit temperature.
The COM transceiver transmit
power has been automatically
reduced to compensate for the
condition.
• Check for adequate ventilation
or check cooling airflow. Refer
to Section 2.7 of the
installation manual.
COM transmitter power has been
reduced (430W only)
• Insufficient voltage level
• Check the input voltage
Configuration error - Config
service req’d
• The configuration information
has been lost or corrupted.
• Reconfigure the unit
Data transfer cancelled (crossfill
is busy)
• An attempt to transfer flight
plan data during a unit-to-unit
crossfill was cancelled.
• The host unit is busy. Wait
until any previous crossfill
operation is complete, before
reattempting the transfer.
Data transfer cancelled (data
invalid)
• An attempt to transfer a single
user waypoint during a unit-to-
unit crossfill was cancelled.
No waypoint was specified on
the Crossfill Page.
• Select a user waypoint and re-
attempt the transfer.
Data transfer cancelled (version
mismatch)
• An attempt to transfer data
during a unit-to-unit crossfill
was cancelled. The database
versions of the two 400W
Series units are not identical.
• If necessary, update the
database(s) so they match.
Data transfer error, please re-
transmit
• An error was detected during
unit-to-unit crossfill of user
data (user waypoints and/or
flight plans).
• The data transfer should be re-
attempted.
Display backlight failure
• The 400W Series unit has
detected a failure in the
display backlighting.
• Contact Garmin technical
support.
Do not use for navigation
• The 400W Series unit is in
Demo Mode and must not be
used for actual navigation.
• Check that the DEMO MODE
SELECT pin is not connected.
See section 4.5.1.12.
G/S has failed (430W only)
• The unit has detected a failure
in the glideslope receiver.
• Contact Garmin technical
support.